Distribution pattern and ecological risk assessment of heavy metals in Henan section of the Yellow River

Heavy metals (HMs) pollution in the environment is a persistent issue and draws public attention constantly. However, there is little research assessing the pollution level of HMs in the Henan section of the Yellow River although the river is one of the most important water supply rivers in Henan pr...

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Published inWater science & technology. Water supply Vol. 22; no. 7; pp. 6195 - 6204
Main Authors Zhang, Kai, Li, Kuangjia, Xin, Rui, Xu, Zhiheng, Zhang, Zhongshuai, He, Siyu, Zhao, Zhenzhen, Tong, Minghui, Cui, Yongxin
Format Journal Article
LanguageEnglish
Published London IWA Publishing 01.07.2022
Subjects
Anthropogenic factors
Bioavailability
Cadmium
distribution pattern
Ecological effects
Ecological risk assessment
Economic development
Extraction procedures
Health risks
heavy metal
Heavy metals
Human influences
Metals
Pollutants
Pollution levels
Principal components analysis
Quality control
Risk assessment
Rivers
Sediments
speciation analysis
Water supply
yellow river
United States > US
China
Yellow River
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Summary:Heavy metals (HMs) pollution in the environment is a persistent issue and draws public attention constantly. However, there is little research assessing the pollution level of HMs in the Henan section of the Yellow River although the river is one of the most important water supply rivers in Henan province. In this research, the fraction contents of six HMs in the Henan section of the Yellow River were investigated by adopting the European Community Bureau of Reference (BCR) sequential extraction procedure. Moreover, the potential health risk caused by HMs was evaluated by adopting both the geo-accumulation index (Igeo) and ecological hazard index method. The results indicate the presence of a light HM pollution level in the Yellow River generally. However, the health risk caused by Cd cannot be neglected. Fraction analysis indicates that the content of the B2 fraction is high, which needs more attention. Overall, branch afflux might be one of the important pathways through which anthropogenic activities influence the Yellow River. The results of both the Igeo and ecological hazard index indicate that the potential health risk caused by HMs is low in the Yellow River, and the Yellow River protection policies implemented by Henan province may be the underlying reason.
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content type line 14
ISSN:1606-9749
1607-0798
DOI:10.2166/ws.2022.218